中文摘要：

深井自动垂直钻井工具工作于数千米深的井下，对其上的液压导向机构的性能有较高的要求。利用仿真软件包AMEsim对该液压导向机构进行接近于实际工况的仿真，揭示了这种液压系统的特有的性能。特别是超常环境压力下系统仿真结果表明，由于超常环境压力可改善系统的吸油性能，因而使得该系统具有适应超常环境压力的特性．对液压导向机构的理论和实验分析证明了系统仿真的有效性。

英文摘要：

The deep well automatic vertical drilling tools positioning at thousands of meters, the hydraulic steering mechanism of them is demand of upper performances. The simulation close to practical work on the mechanism with AMEsim demonstrates the peculiar characteristic which the hydraulic system owns. Especially the result of the system simulation under the extraordinary environment pressure indicates the pressure can improve the performance of oil suction, so brings the characteristic of fitting the system for the pressure. The analysis of theory and experiment on the hydraulic steering mechanism shows the validity of the system simulation.